Bevel gauge



May l0, 1932.

BEVEL GAUGE Filed oct. 9, 1929 MT RAFTER SIUE Q U T5 la Inventor A Homey H. AHoLA 1,857,129

Patented May 10,"1932 `Y Innnonn 301111,01? srnnvENsont'WAslN-Gron BEvEL GAUGE y j Amun/110@ 11,1611 octobery 9, 1929.Av `serial 110,398,370;

v`My present inventionrelates ltof an; iin-.1

proved'bevel gauge 'or mitering square foruse by carpenters, j oiners, and others, and 'especially those engaged in layingfoutfangles for cutting-rafters, as in framing -roofs `of buildin'g'gs.v o The gauge of my invention' is of the straightedge type utilizing a 'pivoted`,` `sli'd-v able, blade" o'r ruler vin combination with lthe) v v straight edge',and employing'lduplex locking ferent angle.

or set means for rigidlyj oinngthe'blade with the straight edge :after the proper adjustmentis found; I

In carrying out my invention I utilize a scale or table plate, forming part of the straight edge, upon which plate, scales, tables,

graduations, and other data, appear, and both sides of the plate are utilized for this purpose. Both sides of the pivoted, slidable blade are also provided with data for use inlayng olf marks and the duplex locking means are used at opposite sides of the instrument.k

The invention consists in certainrnovel combinations and arrangements of yparts as will hereinafter, be more fully set forth and blade partly opened for convenience of illusv tration, and Figure 2 is a view of the reverse side of the instrument with the blade at a dif- Figure 3 is an edge view of the instrument as seen at line 3 3 of Figurey 1. Figure 4 is an enlarged sectional detail view at linev 4 4 of Figure 1. Figure 5 is anedge view of the instrument. Figure 6 is asectional detail vleW at line 6 6 of Figure 2. Figure 7 is a detail perspective viewshowing part of the slidable blade and also its pivoted washer. Figure 8 is asectional detail view at line 8 8 of Figure 5.

I preferably form the straight edge 1 along the edge of a semi-circular plate 2 upon which the scales, tables, tabulations, and other data are? aiixedin suitable manner, and both sides of the .plate are utilized `for this data. The straight edge also extends along the `edge of extends laterally from the circularplate.A '-In La handle portion which is integral with, and -f combination' with the scale plate and itshandle I also utilize a slotted plate 4 of which its s'lotf5 extends inwardly from the open outer end of .thisslotted plate. The plate 4 has a scale, reading infinches, along one edge of its slot", ,andV this scalel indicates the distancesfrom the end of the liandleand to be used asa depth gauge. By means ofscrews-G, at the slotted, outerA end of this scale'plate, the late 7 teris rigidly securedxto theouter end of the handle 3, v and thescale plate is" spaced. from the handle and datal plateV to forma slot 7 for the reception ofthe pivoted, slidable blade or ruler 8 ,thatis used to draw the lines of the anglessought in 'cutting therafters.

The pivoted, slotted vblade is fashioned with a longitudinally extending slot 9 and upset flanges'10Qareprovidedalong the sides of the slotasfbes'tseen ill 'Figure 8.4 The blad'eis slidable with relation tothe Adata plate Z'Tandits straightedge'and is also pfivoted,l a lcircular washerll being carried bythe bladeV and fashioned with a-central openingfor the pivot screw 13,* The'washer is" clamped stationary yby meansof r.a'clva'mp nut'14 'and its handle 15,

andof c'oursethe slotted bladeforrulerlisslid'- ablewith relation toits pivoted Washer. "The scale-plate 4, asseenin-Figure lfisffashioned witha circular lhead 16 through rv'vliichthe .i

pivot s crevv lpasses, an'd the clamp l nut` 14 'frictional ly--engage fs'this head tohold the slotted blade 8inv adjusted angular position, with relation to the straight edge.'AVK

"Thecangularmarking position, ofthe ruler i.

or blade is -'secured'by means of a screw 17 whichishturned'by its lnurled head 18 and adaPted-tQinsert its smooth end into a se-l lectedfrso'cliet for recess "19 of the data plate;

Thesevsockets are indented in beth ksides of the l plate an'd are located in predeter- Figure 1 i theV sockets 'are 'i 'shown in arcuate spacesbetweenarcuate lines on the data plate,

whilef-inFigureA 2the sockets'arefshown on er ymined' :positions: on 'radial Ali` nes :'ffrom the center pin or screw 13 ofthe instrument; l' In ith 2.5 and is jointed thereto at the outer end of the arm. The innerend'o'fthis arm 22 is Vpivoted i lines radiating from the center or pivot pin and within segmental areas, and in both instances the .sockets are-located in predetermined positions with the necessary data and designations adjacent thereto for setting the blade 8.

y The screw 17 thus becomes a setting pin that may' be slid' along in the longitudinal Y A` i slot 9 of the blade'S, until the desired' socket is reached, and the desired angle of the blade iS fixed by Setting thepnn v.,r 1...t heseeket,aber

which the parts are tightened by turning the handle of the lock nut. j 1

The set screw is mounted in a slide nut, 20, under the flanges ofthe slottedbl-ade,andl located' between the blade and the datal plate,

anda guard 21 is secured at one end of theV slide nut, andextends over the head 18 of the screw to prevent accidental turning or dis# placement of the screw; 'a

,'When the instrument is used as indicated*Y inFigure 2 and the blade is set in accord with the data on this face of the data. plate, I employ an arm 221t-hat moves with the blade 8 onlthe center. pin 13. `At its outer end` this armhas anangular, end'post 23 of a width to slide freely in the slot V9 of the blade 8, or rather to perniitthe blade to slide freely with relation tothe arm, and a laterally' extending Y head 24: on this post `forms a T-shaped' retain- Ving head and guide. The post extends across the circular edge of the data plate, Ythrough the slot 9, and the Theadjisthuslocated at the outer. sideofftheblade and on the side of the dataplate opposite to the side where thek slotted arm is located. The arm of course e2;-

t'ends radially Afrom the center of theinstrument and is alinedV with theblade,V Y'

This arm has VaY longitudinallyjextending slet 25 annee with the slot 9 Qf the blades,

and a set screw is'movable along the slot, with a slide nut 26`innwhieh the screw 27 iscarried.

This screw-,is designed tok co-act .with a selected socketv in one of the segmental areas of the data plate, and isrused in manner similar toithe set pinor screw 1 7, a guard 28 .being usedfor the screw-27 similar' to the gua-rd 21 for the screw 17.' I Y For measuring or gauging depths at which `V rafters areto be split, I use a slide gauge block 29 that is movablein the slot 5 of the f plate 4, and this gauge block may be xed in set position by means of a butterfly nut 80, after'the distance v'has been-determined by the scale along one side of the slot 5, the. disof a pivotal, slotted, slidable blade mounted on the data-plate, a slide carried by the blade,

land Va set screw mounted in said slide for coaction with a selected one of the sockets.

2. In a measuring instrument of the straighty edge type including a semi-circular data-plate having sockets in rits face, the combination Witha slotted blade mounted on said plate and means for clamping the'blade with relation'to the plate, of a radially disposed Yelennrotesler1-.Quesseof the Plate and hav-r ing means Vfor pivotal connection with the 1 slotted blade on theother side of the plate,

and adjustablel setting means mounted on said radial'arm orfeo-action. with a selected One ofthe SQCketS,

slotted blade, a'slid Cer-.Tied bythe arm, ,and

a set screwin ysaid slide for' coeaotion with a.. selected one ofthe sockets.4 j

g Intestimonywhereof I aXmyv's'i-gnatur.

HAROLD Anota.:

I lle tan-Gaming dtermined'fromlthe free end of i y vhehandle). f i ,f r. n

Having thus fully rdescribed my invention, Y

what I Claim asnew and desireto secure by a Letters Patentiszu Straight edge type'including a data-plate.

1. In a? measuring instrument of lthe having ASockets in its ace,the combination 

